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4
CV Diagnostics Operations
The Diagnostics application can access the electronic control module of multiple vehicle
control systems, including but not limited to the engine, transmission, anti-lock brake
system (ABS), and airbag system (SRS).
4.1 Establish Vehicle Communication and Selection
4.1.1 Establish Vehicle Communication
The Diagnostics operations require connecting the MaxiSys MS909CV tablet to the test
vehicle through the VCI device using the Main Cable (Use the applicable Non-OBD type
adapter if needed). To establish proper vehicle communication with the tablet, you need
to perform the following steps:
1. Connect the VCI device to the vehicle's DLC for both communication and power
source.
2. Connect the VCI device to the tablet via Bluetooth, Wi-Fi or USB connection.
3. When the above steps are completed, check the VCI navigation button at the
bottom bar on the screen. If a green Bluetooth, Wi-Fi or USB icon appears at the
lower-right corner, the MaxiSys MS909CV Diagnostic Platform is ready to start
vehicle diagnosis.
4.1.1.1 Vehicle Connection
The method used to connect the VCI device to a vehicle's DLC depends on the vehicle's
configuration as follows:
A vehicle equipped with an On-board Diagnostics Two (OBDII) management
system supplies both communication and 12-volt/24-volt power through a
standardized J-1962 DLC.
A vehicle not equipped with an OBDII management system supplies communication
through a DLC connection, and in some cases supplies 12-volt power through the
auxiliary power outlet or a connection to the vehicle battery.
OBDII Vehicle Connection
This type of connection only requires the main cable without any additional adapter.
To connect to an OBDII vehicle
1. Connect the main cable's female adapter to the Vehicle Data Connector on the
VCI device and tighten the captive screws.
